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Populations, Habitats, and Niches (3:30)
A CHAPTER FROM: Biology: The Science of Life: Ecology: Organisms in Their En...
This chapter clip includes four sub-clips that provide information on various organisms' communities, populations, habitats, and niches.
- 6-8Grades 6-8
Closed Captioning- Curriculum Explorer
Population Size (0:51)
A SECTION FROM: Biology: The Science of Life: Ecology: Organisms in Their En...
The size of a population affects the reproductive success of the population.
- 6-8Grades 6-8
- Closed Captioning
- Curriculum Explorer
Looking at the Big Picture: Understanding Why... (0:24)
A CHAPTER FROM: Enviro-Tacklebox: Module 5: Processes and Cycles in the Envi...
Over time, human population increases cause a loss of animal habitat.
- 6-8Grades 6-8
- Curriculum Explorer
Population Cycles: Vulnerable to Hunting and... (1:05)
A CHAPTER FROM: Enviro-Tacklebox: Module 5: Processes and Cycles in the Envi...
Both abiotic and biotic factors work together to cause major shifts in population cycles.
- 6-8Grades 6-8
- Curriculum Explorer
Understanding Fish Populations: A Look at the... (1:31)
A CHAPTER FROM: Enviro-Tacklebox: Module 5: Processes and Cycles in the Envi...
Biotic and abiotic factors affect the Chesapeake Bay’s fish population dynamics.
- 6-8Grades 6-8
- Curriculum Explorer
Understanding Terrestrial Organisms: The Importance... (0:50)
A CHAPTER FROM: Enviro-Tacklebox: Module 5: Processes and Cycles in the Envi...
Population dynamics of aquatic environments can be determined by sampling and electro-fishing.
- 6-8Grades 6-8
- Curriculum Explorer
Natural and Human Threats to Population Cycles (0:22)
A CHAPTER FROM: Enviro-Tacklebox: Module 5: Processes and Cycles in the Envi...
Threats to population cycles can be from manmade or natural influences.
- 6-8Grades 6-8
- Curriculum Explorer
Population Dynamics: The Relationship Between... (1:20)
A CHAPTER FROM: Enviro-Tacklebox: Module 5: Processes and Cycles in the Envi...
The pattern of population dynamics is determined by looking at keystone species and how they interact with their environment.
- 6-8Grades 6-8
- Curriculum Explorer
Abiotic and Biotic Factors: Influencing the Animal... (0:16)
A CHAPTER FROM: Enviro-Tacklebox: Module 5: Processes and Cycles in the Envi...
Changes in populations can be caused by abiotic factors, such as weather and temperature, or by biotic factors, like diseases or predator-prey interactions.
- 6-8Grades 6-8
- Curriculum Explorer
Trends and Changes in Bird Populations (1:45)
A CHAPTER FROM: Enviro-Tacklebox: Module 5: Processes and Cycles in the Envi...
The dynamics of bird populations are affected by weather, habitat, and human activity. Migration patterns and changes in bird populations can be determined from a population census.
- 6-8Grades 6-8
- Curriculum Explorer